34, 50 in the first part, 22 in the second part.

The following is the relevant introduction to "Happy Superman":

"Happy Superman" is produced by Beijing Pony Galloping Pictures Co., Ltd., Beijing TV Station, Guangdong Star Creative Animation Co., Ltd., and Beijing Fantasy A fantasy animated film jointly produced by Animation Technology Co., Ltd. and Tianjin Northern Animation Group Co., Ltd., directed by Huang Weiming, written by Huang Weiming, Ke Yu, Chen Yanyao, Wang Daiwang, Luo Yuting, Duan Leilei and Tan Yin, and written by Liu Hongyun, Zu Qing, Deng Yuting, Yan Yanzi, Li Tuan and others participated in dubbing.

The film tells the story of five little supermen, Happy Superman, Sweetheart Superman, Playful Superman, Careless Superman, and Cautious Superman, who unite to defend their homeland and fight wits and courage against shape-shifting monsters.

The film premiered in mainland China on June 28, 2013.

The above information refers to Baidu Encyclopedia - "Happy Superman"